<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        // 模板字符串之中还能调用函数。
        function fn() {
            return "Hello World";
        }

        `foo ${fn()} bar`
        // foo Hello World bar
    </script>
</body>

</html>